Joseph f



J. F. DUNN.

CLOCK. APPLICATION HLE U FEB. 27.1922- Reissued May 9, 1922. 15,348.

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Inventor JaqephFDUhri By Aflorney 3 SHEETS-SHEET 2.

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CLOCK. APPLICATION FILED FEB- 27, 1922.

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Inuenlor L B Jbaeph EDurm PATENT OFFICE.

JOSEPH F, DUNN, OF NEW YORK, N. Y.

CLOCK.

Specification of Reissued'Letters Patent.

Reissued May 9, 1922.

Original No. 1,270,706, dated June 25, 1918, Serial No. 855,610, filedAugust 7, 1914. Application for reissue filed February 27, 1922.

To all whom it may concern:

'Be it known that I, JOSEPH F. DUNN, a citizen of the United States,residing at New York city, in the county of New York and State of NewYork, have invented new and useful Improvements in Clocks, of which thefollowing is a specification.

This invention relates to improvements in clocks and more particularlyto mechanism for predetermining the release of the alarm of alarmclocks.

It is the object of this invention to construct the releasing mechanismof an alarm clock so that it will operate to release the alarm on anexact predetermined hour and minute. It is also an object of thisinvention to provide in addition to the usual alarm hour indicator onthe alarm dial an alarm minute indicator which travels on the time dialor on the alarm dial corre: spondingly with the alarm hour indicator onits own dial and its position will indi-, cate the exact minute themechanism will release the alarm. In the usual alarm clock the hours onthe alarm dial are indicated in the same manner and correspond to thehour designating numerals upon the clock face i but in settin the alarmthe indicator travels counter c'loc; ise upon its dial. It is alsoanob'ject of this invention to construct the alarm minute indicator totravel clock-wise upon the clock dial so that there will-be no confusionin setting the alarm.

The advantages of this invention are "obvious. The usual alarm clock isprovided with a small alarm indicating dial over which travels in acounter clock-Wise direction a. single indicator in the form ofa smallclock hand. This dial is divided into hours, quarters, and halves, sothat the exact minute the alarm will be released is amatter ofconjecture when set between the divisions on the dial. By theconstruction contemplated inthis-invention, the exact minute of releasemay be determined.

A further advantage 'is the arrangement whereby-the alarm minuteindicator travels clock-wise about the clock iiace over the hour andminute numerals thereon, as confusion arises in calculating minutes in acounter clock-wise moving indicator.

While the preferred forms of this invention are illustrated upon theaccompanying sheets of drawing, yet is it to be understood Serial No.539,808.

that minor detail changes may be made without departing from the scopethereof.

Figure 1 1s a view in front elevation of an alarm clock embodying thisinvention.

Fig, 2 1s a diagrammatical view in front elevatlon illustrating thetrain of gears between the alarm hour and minute indicators.

Fig. 3 1s an enlarged top plan view of the F 1g. 2 w1th parts brokenaway and the clock mechanism omitted.

F 1g. fl is a View in side elevation of Fig. 2, looking from the-right.1 fl; 1g. 5 is a similar view taken from the Fig 6 is a View in frontelevation of a clock illustrating a modified form of this -in vention.

Fig. 7 is a similar view of another modification with parts broken away.

Flg, 8 is an enlarged view of the constructlon of Fig. 7 in sideelevation looking from the right, with parts broken away and the clockmechanism omitted. I

In all forms illustrated the usual clock mechamsm is omitted as it formsno part of this invention.

In Figs. 1 to 6 inclusive, the clock face, hour and minute hands, alarmdial, alarm indicatorv and mechanism, as well as the means of settingthe clock hands and alarm indicators are of the usual construction. Inthis form an alarm minute indicator .1, preferably in the form of afinger or arm of different color from the hour and minute hands of. theclock, is secured on the outer side of the clock face upon a sleeve 2loosely mounted upon the hour hand sleeve, passing through the clockface and is provided with a pinion 3 at the inner side thereof. The disk4 on the alarm hour indicator spindle 5 which carries the alarm releasekey 6 is .provided with a gear Wheel 7 which meshes with apinion 8 onthe arbor 9 of the usual transmission gear to the alarm releasing sleeve10. This pinion'8 is provided with a .;gear wheel 11 meshin with thepinion 3 of the alarm minute in icator, and the relation of the pinionand gears 3, 11, 8 and 7 is such that the alarm minute indicator 1 willmake one complete revolution during the move ment of the alarm indicator12 through one hour division onthe alarm dial'13.

As illustrated on Fig. 1 the alarm is set for three-iorty-fiv'e and acontinued movement of the alarm setting mechanism will cause the alarmminute indicator to travel counter clockwise over the time dial over theminute divisions approachingthe hour of three as the alarm hourindicator passes over the corresponding divisions on the alarm dial andthe motion of both indicators will continue in this manner until thedesired hour and minute for the release of the alarm has been reached.

In this form the numerals on both time and alarm dials are arranged inthe same relation but, as both the alarm hour and minute indicatorsrevolve in a' counter clock- Wise direction, the reading on the alarmdial is in a reverse direction, for example, in Fig. 1 the hourindicator is set at three-forty-five and passes from there throughthree-thirty and three-fifteen to three oclock and so on, and as themovement of the alarm minute hand is the same as the alarm hour hand theminutes are read directly upon the time dial, for instance, the positionof the alarm minute indicator on Fig. 1 indicates three-fortyfive thesame as if the time minute hand was in this position. I

A spring 14 may be secured upon the inner side of the clock face to bearupon the alarm minute indicator pinion 3 to cause it to move evenly andretain its position when at rest.

In the form above described both the alarm hour and minute indicatorsmove about the time and alarm dials in a counter clock-wise directionwhich may be contusing to one not familiar with this operation andmanner of reading. A. construction is illustrated on Fig. 6 by which thealarm minute indicator 1 moves clock-wise about the clock dial while thealarm indicator 12 moves counter clockwise about the alarm dial in theusual manner. This is accomplished by constructing the alarm minuteindicator pinion 3 to mesh with the gear 7 a carried upon the alarmmechanism spindle. By constructing the pinion 3 and gear wheel *2 inproper proportions the alarm minute indicator will designate the exactminute upon the time dial after the hour designated upon the alarm dialthat the alarm will be released. The position of the alarm indicators onFig. 6 indicates that the alarm will be'releascd at three-forty-five.

Another manner of carrying out this invention, which contemplatesessentially the providing oi an alarm minute indicator. moving inconjunction with the alarm hour indicator, is illustrated in Figs. 7 and8 in which both the alarm indicators are arranged to travel upon thealarm dial and are read in the same manner as in the constructionillustrated in Fig. 1. This is accomplished by mounting a pinion 15 uponthe key carrying disk of the alarm spindle 5 meshing with a gear Wheel16loosely mounted upon the arbor 9 of the alarm transmission train. ofgears. This gear wheel is provided with a pinion 17 which in turn mesheswith a gear Wheel 18 carried upon a sleeve 19 loosely mounted upon thealarm setting spindle 5". This sleeve 19 passes through the clock faceand carries on the outer side the alarm hour indicator 1%, the alarmminute indicator 1 being carried upon the spindle 5 The pinions and gearwheels 15, 16, 17 and 18 are so arranged and proportioned that upon thepassage of the alarm hour indicator through one hour division on thealarm dial 13 the alarm minute indicator makes a complete revolution ofthe dial.

Upon this alarm dial the alarm indicators 1 and 12 move in the samedirection, counter-clockwise.

What I claim is:

1. In a device of the character described including an alarm setting andreleasing mechanism includingan alarm transmission gearing and arborhaving an alarm setting spindle carrying an hour indicator upon theclock face, a release key carrying disk upon the spindle, an alarmminute indicator upon the clock face, a sleeve carrying the minuteinclicator passing through the clock face, and gears upon the key diskand minute sleeve meshing with gears on the arbor of the alarmtransmission gearing, whereby the indicators are moved concurrently tocause the minute indicator to make a complete revolution as the hourindicator moves through one hour division.

2. The combination of an alarm mechanism, a time mechanism having timeindicating devices and means for releasing said alarm mechanism,including an alarm set ting spindle, means for setting said alarmmechanism relative to the time mechanism, and indicating devices whichshow the setting of the alarm mechanism, comprising an hour indicatormounted on the alarm spin dle, a separate minute indicator mounted on asleeve passing through the clock face, and gearing connecting said hourand minute indicators whereby they are moved together at differentspeeds respectively in the proportion of one to twelve in the setting ofsaid alarm mechanism.

3. The combination of an alarm mechanism, a time mechanism having ,hourand minute hands and means for releasing said alarm mechanism includingan alarm setting spindle, means for setting said alarm mechanismrelative to the time mechanism, and indicating devices which show thesetting of the alarm mechanism, comprising an alarm hour hand mounted onthe alarm spindle, a separate alarm minute hand mounted on a sleevepassing through the clock face, and gearing directly connecting saidalarm hour and minute hands to move together at the different speeds ofone to twelve respectively in the setting of the dicator to move in timerelation with the setalarm mechanism. ting of the hour indicator at aspeed of 4. In an alarm clock, an alarm setting and twelve revolutionsto one. 10

releasing mechanism, an alarm dial, an alarm Signed at New York city, inthe county 5 hour indicator, an alarm minute indicator, of New York andState of New York, this both concentrically mounted on the alarm 8th dayof li ebruai yl ll922.

F. DUNN. [1 5.]

dial, and means for causing the minute in- JOSE

